Tinley Park gunman's police sketch now seen on electronic billboards

Authorities hope electronic billboards will help them track down the gunman in this month's deadly shooting at a Tinley Park clothing store.

The signs display a police sketch of the suspect in the Tinley Park attack that left five women dead and another injured.

The 10-second message, with mention of a $5,000 reward, went up Monday in seven busy areas in the Chicago area. An eighth site is planned.

Scott Elliot is president of Clear Channel Outdoor Chicago, and he says his company will run the billboards for an indefinite amount of time. The company donated the billboard space.

The sketch is based on a description from the survivor, a female store employee. Police describe the suspect as a black man, between 5 feet 9 and 6 feet tall and between 200 to 230 pounds with thick braided hair and a receding hairline.